The key characteristics of active transport are:
In biology, is the movement of molecules from an area of low concentration to high concentration . This is often called moving "against" or "up" the concentration gradient. The Story of Pumper the Protein is active transport low to high
In nature, substances naturally spread out until they reach equilibrium (diffusion). However, cells often need to accumulate specific nutrients or maintain strict ion balances that aren't possible through natural spreading. The key characteristics of active transport are: In